From 8ec9ce361d55d995c4619346e0b9c56b9ba6e5d2 Mon Sep 17 00:00:00 2001 From: Suman Anna Date: Wed, 29 May 2024 12:14:19 +0530 Subject: [PATCH] arm64: dts: ti: k3-am65-main: Add PRU system events for virtio A PRU system event "vring" has been added to each PRU and RTU node in each of the ICSSG0, ICSSG1 and ICSSG2 remote processor subsystems to enable the virtio/rpmsg communication between MPU and that PRU/RTU core. The additions are done in the base k3-am65-main.dtsi, and so are inherited by all the K3 AM65x boards. The PRU system events is the preferred approach over using TI mailboxes, as it eliminates an external peripheral access from the PRU/RTU-side, and keeps the interrupt generation internal to the ICSSG. The difference from MPU would be minimal in using one versus the other. Mailboxes can still be used if desired, but currently there is no support on firmware-side for K3 SoCs to use mailboxes. Either approach would require that an appropriate firmware image is loaded/booted on the PRU. Signed-off-by: Suman Anna Signed-off-by: Kishon Vijay Abraham I Acked-by: Ravi Gunasekaran Signed-off-by: MD Danish Anwar Link: https://lore.kernel.org/r/20240529064420.571615-3-danishanwar@ti.com Signed-off-by: Vignesh Raghavendra --- arch/arm64/boot/dts/ti/k3-am65-main.dtsi | 36 ++++++++++++++++++++++++ 1 file changed, 36 insertions(+) diff --git a/arch/arm64/boot/dts/ti/k3-am65-main.dtsi b/arch/arm64/boot/dts/ti/k3-am65-main.dtsi index ed71561c5bd9..1af3dedde1f6 100644 --- a/arch/arm64/boot/dts/ti/k3-am65-main.dtsi +++ b/arch/arm64/boot/dts/ti/k3-am65-main.dtsi @@ -1185,6 +1185,9 @@ <0x22400 0x100>; reg-names = "iram", "control", "debug"; firmware-name = "am65x-pru0_0-fw"; + interrupt-parent = <&icssg0_intc>; + interrupts = <16 2 2>; + interrupt-names = "vring"; }; rtu0_0: rtu@4000 { @@ -1194,6 +1197,9 @@ <0x23400 0x100>; reg-names = "iram", "control", "debug"; firmware-name = "am65x-rtu0_0-fw"; + interrupt-parent = <&icssg0_intc>; + interrupts = <20 4 4>; + interrupt-names = "vring"; }; tx_pru0_0: txpru@a000 { @@ -1212,6 +1218,9 @@ <0x24400 0x100>; reg-names = "iram", "control", "debug"; firmware-name = "am65x-pru0_1-fw"; + interrupt-parent = <&icssg0_intc>; + interrupts = <18 3 3>; + interrupt-names = "vring"; }; rtu0_1: rtu@6000 { @@ -1221,6 +1230,9 @@ <0x23c00 0x100>; reg-names = "iram", "control", "debug"; firmware-name = "am65x-rtu0_1-fw"; + interrupt-parent = <&icssg0_intc>; + interrupts = <22 5 5>; + interrupt-names = "vring"; }; tx_pru0_1: txpru@c000 { @@ -1339,6 +1351,9 @@ <0x22400 0x100>; reg-names = "iram", "control", "debug"; firmware-name = "am65x-pru1_0-fw"; + interrupt-parent = <&icssg1_intc>; + interrupts = <16 2 2>; + interrupt-names = "vring"; }; rtu1_0: rtu@4000 { @@ -1348,6 +1363,9 @@ <0x23400 0x100>; reg-names = "iram", "control", "debug"; firmware-name = "am65x-rtu1_0-fw"; + interrupt-parent = <&icssg1_intc>; + interrupts = <20 4 4>; + interrupt-names = "vring"; }; tx_pru1_0: txpru@a000 { @@ -1366,6 +1384,9 @@ <0x24400 0x100>; reg-names = "iram", "control", "debug"; firmware-name = "am65x-pru1_1-fw"; + interrupt-parent = <&icssg1_intc>; + interrupts = <18 3 3>; + interrupt-names = "vring"; }; rtu1_1: rtu@6000 { @@ -1375,6 +1396,9 @@ <0x23c00 0x100>; reg-names = "iram", "control", "debug"; firmware-name = "am65x-rtu1_1-fw"; + interrupt-parent = <&icssg1_intc>; + interrupts = <22 5 5>; + interrupt-names = "vring"; }; tx_pru1_1: txpru@c000 { @@ -1493,6 +1517,9 @@ <0x22400 0x100>; reg-names = "iram", "control", "debug"; firmware-name = "am65x-pru2_0-fw"; + interrupt-parent = <&icssg2_intc>; + interrupts = <16 2 2>; + interrupt-names = "vring"; }; rtu2_0: rtu@4000 { @@ -1502,6 +1529,9 @@ <0x23400 0x100>; reg-names = "iram", "control", "debug"; firmware-name = "am65x-rtu2_0-fw"; + interrupt-parent = <&icssg2_intc>; + interrupts = <20 4 4>; + interrupt-names = "vring"; }; tx_pru2_0: txpru@a000 { @@ -1520,6 +1550,9 @@ <0x24400 0x100>; reg-names = "iram", "control", "debug"; firmware-name = "am65x-pru2_1-fw"; + interrupt-parent = <&icssg2_intc>; + interrupts = <18 3 3>; + interrupt-names = "vring"; }; rtu2_1: rtu@6000 { @@ -1529,6 +1562,9 @@ <0x23c00 0x100>; reg-names = "iram", "control", "debug"; firmware-name = "am65x-rtu2_1-fw"; + interrupt-parent = <&icssg2_intc>; + interrupts = <22 5 5>; + interrupt-names = "vring"; }; tx_pru2_1: txpru@c000 { -- 2.25.1